rectangular()用于绘制矩形。绘制矩形需要左上角和右下角的坐标。左侧指定左上角的X坐标,顶部指定左上角的Y坐标,右侧指定右下角的X坐标,底部指定右下角的Y坐标。
句法 :
rectangle(int left, int top, int right, int bottom);
例子:
输入:左侧= 150,顶部= 250,右侧= 450,底部= 350;输出 : 输入:左侧= 150,顶部= 150,右侧= 450,底部= 450;输出 :
下面是矩形函数的实现:
// C program to draw a rectangle
#include
// Driver code
int main()
{
// gm is Graphics mode which is a computer display
// mode that generates image using pixels.
// DETECT is a macro defined in "graphics.h" header file
int gd = DETECT, gm;
// location of left, top, right, bottom
int left = 150, top = 150;
int right = 450, bottom = 450;
// initgraph initializes the graphics system
// by loading a graphics driver from disk
initgraph(&gd, &gm, "");
// rectangle function
rectangle(left, top, right, bottom);
getch();
// closegraph function closes the graphics
// mode and deallocates all memory allocated
// by graphics system .
closegraph();
return 0;
}
输出:
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